Time dependent fatigue crack growth behavior of silica particle reinforced epoxy resin composite

Boonyapookana, Alisa; Saengsai, Anchalee; Surapunt, Supachai; Nagata, Kohsoku; Mutoh, Yoshiharu

doi:10.1016/j.ijfatigue.2016.02.013

Cited by 17 publications

(7 citation statements)

References 11 publications

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“…Therefore, increasing the content of the curing agent can reduce the breaking strength and fracture resistance of CER. In fact, the crack propagation behavior is mainly controlled by K max , and the pure epoxy also showed the same trend 29 . Therefore, for five samples, S1 showed better crack resistance with K IC = 0.36 MPa mm 1/2 .…”

Section: Resultsmentioning

confidence: 78%

Laboratory investigation of cracking resistance performance of the cold‐mixed epoxy resin

Ding

Dong

2020

J of Applied Polymer Sci

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Cold-mix epoxy resin (CER) is an excellent binder material but with weak crack resistance and brittle failure risk. Therefore, it is of significance to find a feasible parameter to constrain the failure potential. To this end, the dynamic mechanical test, tensile test, volume shrinkage test, fracture test, and scanning electron microscopy (SEM) were used to analyze and evaluate mechanical properties, curing shrinkage, and fracture toughness of the CER. Subsequently, the bivariate correlation analysis was used to feature the relationship among different indicators. The results indicated that the amount of curing agent has a significant influence on the tensile strength, elongation at break, volume shrinkage, fracture toughness, and plastic radius of CER. Meanwhile, there is a close correlation between tensile strength, elongation at break, and fracture toughness. Fracture toughness can be used as an evaluation index to represent the crack resistance of CER, and tensile test can be used as a confirmatory parameter. However, the volume shrinkage of CER cannot be ignored. Small voids distributed on the fracture surface of the CER can increase the toughness and then improve the crack resistance of the CER through SEM analysis.

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Section: Resultsmentioning

confidence: 78%

Laboratory investigation of cracking resistance performance of the cold‐mixed epoxy resin

Ding

Dong

2020

J of Applied Polymer Sci

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“…From the DCB test it is found that the crack growth rates of the adhesive is comparable to those of epoxy resins [56,60,61,62,63,57,58,59,64], especially those tested in [56,57,58,59].…”

Section: Experimental Demonstration: Test Of Full Scale Research Bladementioning

confidence: 85%

Tunneling cracks in full scale wind turbine blade joints

Jørgensen

Sørensen

Kildegaard³

2018

Engineering Fracture Mechanics

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A novel approach is presented and used in a generic tunneling crack tool for the prediction of crack growth rates for tunneling cracks propagating across a bond-line in a wind turbine blade under high cyclic loadings. In order to test and demonstrate the applicability of the tool, model predictions are compared with measured crack growth rates from a full scale blade fatigue test. The crack growth rates, measured for a several metre long section along the blade trailing-edge joint during the fatigue test, are found to be in-between the upper-and lower-bound predictions.

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“…1 However, owing to the high cross-linking density after curing of the EP resin, a three-dimensional network structure was formed and large internal stress arises, which lead to brittleness, poor fatigue resistance, low impact resistance, and poor tribological properties, all of which limit the applications of EP resins. The tribological properties of EP material can be improved by adding different solid lubricants and liquid lubricants, such as graphite, polytetrafluoroethylene (PTFE), nanosilica, molybdenum disulfide, ionic liquid (IL), and liquid paraffin, 2 –7 which can reduce the contact temperature and form a lubricating film on the contact surface, furthermore to obtain lower friction coefficient. However, due to the tremendous difference of the molecular structure and the incompatibility between the additives and the polymer matrix, a phase separation structure of the composites and a deterioration of the mechanical properties may arise.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and tribological properties of epoxy composites modified by methyl silicone oil-loaded microcapsules and/or reinforced with potassium hexatitanate whiskers

Yang

et al. 2019

High Performance Polymers

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Self-lubricating functional microcapsules using melamine-formaldehyde resin encapsulating methyl silicone oil as core materials were synthesized by in situ polymerization method. And they are further adopted as antifriction additive to improve the tribological properties of binary and ternary epoxy (EP) composites, which were fabricated by incorporating microcapsules and the potassium hexatitanate whiskers (PTWs) into the EP matrix. The tribological behaviors of the as-synthesized EP composites have been evaluated by means of a block-on-ring high-speed wear tester. The results demonstrated that the friction coefficient and wear rate of EP /microcapsules binary composites decreased with the increase of microcapsule concentration due to the self-lubricating effect of the core material. For the EP /microcapsules/PTWs ternary composites, not only the mechanical properties and thermal stability PTWs were improved, but also the friction reduction and antiwear effect of the ternary composite are further enhanced due to the synergistic effect of PTWs and microcapsules.

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Time dependent fatigue crack growth behavior of silica particle reinforced epoxy resin composite

Cited by 17 publications

References 11 publications

Laboratory investigation of cracking resistance performance of the cold‐mixed epoxy resin

Laboratory investigation of cracking resistance performance of the cold‐mixed epoxy resin

Tunneling cracks in full scale wind turbine blade joints

Microstructure and tribological properties of epoxy composites modified by methyl silicone oil-loaded microcapsules and/or reinforced with potassium hexatitanate whiskers

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